/usr/bin/neqn is in groff-base 1.22.3-9.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | #! /bin/sh
# Copyright (C) 2014 Free Software Foundation, Inc.
#
# This file is part of groff.
#
# groff is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 2 of the License (GPL2).
#
# groff is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# The GPL2 license text is available in the internet at
# <http://www.gnu.org/licenses/gpl-2.0.txt>.
# Provision of this shell script should not be taken to imply that use of
# GNU eqn with groff -Tascii|-Tlatin1|-Tutf8|-Tcp1047 is supported.
GROFF_RUNTIME="${GROFF_BIN_PATH=/usr/bin}:"
PATH="$GROFF_RUNTIME$PATH"
export PATH
exec eqn -Tascii ${1+"$@"}
# eof
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